The United Nations secretary-general has been said to hold the “most impossible job in the world.” And for just the 10th time in the organization’s history, a new candidate will soon be stepping into that role. Through immersive storytelling and voices from around the globe, World’s Toughest Job explores the challenges facing the next UN leader.  Over eight episodes, we’ll examine how the secretary-general might make a difference on issues including economic turbulence, superpower rivalries, artificial intelligence, inequality, and climate change. This is about more than the one person who will step up to lead an organization. It’s an existential moment for the UN, the one place where countries have a voice and a vote.  Get it wrong, and we all feel the consequences. Get it right, and it could mark a turning point for the organization … and the world. World's Toughest Job is a co-production of Foreign Policy and the UN Foundation.